Monday afternoon, investigators say a man living upstairs at 58 Pearl Street woke up to find smoke filling his apartment. He got out safely and called for help.

Investigators traced the fire to a warming device next to a tank holding a snake. Because the owner was at work, the flames spread into the walls and ceiling, including up to the floor of the second floor apartment. Crews had to open several walls and ceiling areas to put out all the flames.

The property owner doesn't have a damage estimate yet, but investigators say the building has severe structural damage.

No people were hurt in the fire, but the snake in the terrarium did not survive.